Tool-holder.



L. SWANSON.

TO0L HOLDER.

APPLICATION FILED OCT. 13. IBI?.

A @WMM/i101 L Swanson fuk/omg holder proper. f Y

A tool constructedl in accordance with myV f g if To all whom t'mayconcern:

Be itkiifownnthatl I, LUDwia"I :Siva-risen, 4 (declared myi intentionsfour years ago) a citizenhof the United States, residing at Improvementsin Tool-Holders, of which the following is a specification.

This invention comprehends'the provision of tool holders for use in fconnectionwith lathes, boring machines and the like, the holder beingdesigned to accommodate different style tools, and to permit of a quickassociation of parts, or the removal of a tool therefrom.

The nature and advantages of the inven-lv tion will be better understoodwhen .the fol-y lowing detail descriptionis read in connec tion with theaccompanying drawing, jthe invention residing in the' constructiomcombination and arrangement of parts asv claimed.

In the drawing forming part of this speci-1f.

Figure 1 is an elevation partly. insection of the holder showing onetype of tool as# sooiated therewith.

Fig. 2 is a fragmentary bottom plan of Fig. 3 is :an end view. v Fig. 4fis an enlarged detail viewk invention embodies a stock or body portion10 which may be of any suitable dimensions," land provided with arelatively small bore q and a communicating Yrelatively large bore.

The holder proper asillustrated in Fig'. 4,

consists of a tubular member 11 of uniform diameter throughout theinajorA portion of its length, the remainin portion orone eX-`V tremityof the holder being of truste-conical- The frusto-conical portion isformation. slit centrally as at 12 to provide relatively movable jaws 13between `which the tool 14 is adapted to be clamped in the manner to bepresently described. The confronting" faces of the jaws 13 are providedwith alined transverse grooves 15 which unitedly Y define a pocket forthenreception of the shank.

ofuthe tool 14. The grooves by preference are inclined to permit thetool to assumey the proper inclination sov as to be lproperly pref.'sented to the work.- The tubular member` ,A 11 is adapted to be slidablylittedY within the parts in the several lviews and,

eled atg 17`t"ov cooperateV with thefru'stois provided Vwithdiametrically, opposed notches 18 and 19Vrespehctively, the latterbeingdeeper than thel former` andl adapted to receive `the/tool inthematter clearly shown in Fig. i.

, Various means maybe employed for 7'movf `ing. the'4 holderlongitudinally of `the.body 1Q, butv by` preference useis made ofa 4rod2 0 .positioned within the relatively small 'boreofsaid body, and havingathreadedV y'iextremity threadedly 'engaged in a recess 21 'opening at,the end kof .the tubular member arrangedv innermost within the body, Therod projects beyond one end of the body. and isprovide'd with atransverse bore 22'to ac- "w comin'odate a suitable.y handle orgthelike'indicated at 23 yfor rotating the rod in the propervdirection to causethe tubular mem# ber to move inwardly and outwardly Aof the body.`l\,/Ianife'stly by reason of this construction and arrangement ofparts, a tool'x i canbequickly and easily associatedl with or separatedfrom the holder asthe occasion reiiires. y Y The holder 25 is `providedwith athreaded recess 30 opening atone end of the holder to Yaccommodatean operating element for movingl the holder longitudinally ofv thebody,1this element-not being shown but similar to Lthe .element`described in connection this purpose.

enlarged-bore' ofi-thesto'ck or bddy 10, withlv thefiu'sto-conicalportion projecting-beyond v ei'ieend of's'aid body'. Theinner surface of ,i l A the. body 1Q adjacentlone extremity is bev-kDetroit, inthe co'uiity'of VVayneand Y of Michigan, have invented newand useful?" cal portion ofthe holder proper, so that the movable jaws15 will be' moved. into clamping or gripping relation as the holderA-proper is moved inwardly within the'v ybody 10. -In order to permituthe tool to maintain v yits proper Vinclination with respect Ito; theholder., when the latter is drawn withintthe ybody 10, the forwardextremity of the latter I 7.0

vv While it is believed that fromthe foref i y going description thenature and advantages oftliefginvention will be vreadily"apparent, I

desireto have it understood that I d'onotv limit 'myself to what isherein shownjand described,-fand that suchchanges mayfbe re# sorted `towhen desired'as fall within the `f Vscope'of what is claimed.Y l

inglahstock lhaving connnunicating bores of l The herein described toolholder compris-i;

l unequal diameter extending to its opposite end, the outerr end of thelarger bore being frusto-conical and the corresponding end of V- thestock having open notches; a kcylindrical member arranged forlongitudinal move- Y ment inthe largerbore and having an enlarged-frusto-conieal outer end arranged Y l to fit in correspondingly shaped-portions of 'i Copies oi this patent may be obtained for said bore,said frusto-oonioal end having a longitudinal splitproviding resilientclamping jaws and said jawsbeing provided with transversely arranged andinclined grooves Y in their opposing sides, a tool arranged in innerendin a threaded bore of said member and having a head at its outer endbearing against the corresponding end of the stock.

In testimony whereof I aix my signature.

p LUDWIG SWANSON.

ve cents each, by addressing the Commissioner of Patents, Washington, D.0.

